Cita APA (7th ed.)
Punch, K. F. (2005). Introduction to social research: Quantitative and qualitative approaches (2nd ed.). Sage Publications Ltd.
Cita Chicago (17th ed.)
Punch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. London: Sage Publications Ltd, 2005.
Cita MLA (9th ed.)
Punch, Keith F. Introduction to Social Research: Quantitative and Qualitative Approaches. 2nd ed. Sage Publications Ltd, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.